body {
    background: url('../img/bg.jpg') no-repeat;
    background-size: 600px;
    background-repeat: no-repeat;
    background-position: top center;
}

main {
    flex: 1;
    flex-wrap: wrap;
    padding: 26px 32px;

    .tit {
        width: 100%;
        height: 40px;
        color: rgba(255, 255, 255, 100);
        font-size: 28px;
        text-align: left;
        font-family: PingFangSC-bold;
        margin-top: 8vh;
        margin-bottom: 10vh;
    }

    .login-box {
        width: 100%;

        button {
            display: inline-block;
            width: 100%;
            height: 50px;
            border-radius: 25px;
            background-color: rgba(99, 255, 167, 0.5);
            outline: none;
            border: none;
            color: rgba(255, 255, 255, 100);
            font-size: 16px;
            text-align: center;
            font-family: PingFangSC-regular;
            margin-bottom: 20px;
        }

        .chang-box {
            width: 100%;
            height: 20px;
            line-height: 20px;
            font-size: 14px;
            color: #fff;
            text-align: center;
            font-family: PingFangSC-regular;
        }
    }

    .hold {
        position: fixed;
        bottom: 6%;
        left: 50%;
        transform: translate(-50%, -50%);
        width: 100%;
        height: 22px;
        color: rgba(255, 255, 255, 100);
        font-size: 16px;
        text-align: center;
        font-family: PingFangSC-regular;
        font-weight: bold;
        margin-bottom: 6vh;
    }

    .login-text {
        position: fixed;
        top: 20px;
        right: 20px;
        font-size: 20px;
        color: #fff;

    }

    .hint {
        color: #fff;
        text-align: center;
    }
}